science
Grade-9
Easy

Question

A vehicle moving at a speed of 24 m/s accelerates to 56 m/s in 4 s. The acceleration of the vehicle is ___ m/s2.

hintHint:

8 m/s²

The correct answer is: 8


    Given that,
    The initial velocity, u = 24 m/s
    The final velocity, v = 56 m/s
    Time taken, t = 4 s
    On using the first equation of motion we get,
    v = u + at
    Or, a = (v – u)/t
    Or, a = (56 - 24)/4
    Or, a = 32 / 4
    Or, a = 8 m/s2
    Therefore, the acceleration of the vehicle is 8 m/s2.

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